Pic of our dig

[matt4x4]

A wellpoint is a vertical pipe reaching to the area under your pool (preferrably gravel) into which you can push a garden hose to the bottom of the pipe, then use a pump on the garden hose to pump out any water that could exert hydrostatic pressure on your pool. If you ever need to lower your water level for a repair or something, this comes in really handy.

[adillenal]

Thanks MAtt. I learn something new everyday.